Knitted rib fabric



Bm. 26, m22. 3.4.4@,267

' H. T. BALlJX:

KNITTED Rza FABRIC. F'ILED APR. ZSQMIQZZ.

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" other Patented Dec. 26,1l922.,

nauTsn sTaTss lha/M9267 HERBERT T. BALLARD, OF NORRISTOWN, PENNSYLVANIA.

KNITTED RIB FABRIC.

Appli-cation led April 29, 1922. Serial No, 557,492.

To all whom/#Zt may 007106171:

Be it known that l, HERBERT T. BALLARD, a subject of the King of GreatBritain. and resident of Norristown, county of Montgomery, and State ofPennsylvania, have in.- vented certain new and useful Improvements inKnitted Rib Fabrics, of which the following is a specification.

The invention is a fabric made up in part of plain rib and in part oftuck stitches..

The fabric is shown in the accompanying drawinoV which represents'inFig. 1 part of a tubular fabric in which the courses of knit-ting extendhorizontally and therefore the needle wales extend vertically.

Fig. 2 is a diagram of conventional form showing the way the fabric isproduced.

The fabric is produced on a circular rib knitting machine with theattachment such as described in application for Letters Patent of theUnited States filed by me January 15, 1920, Serial No. 351,702.

The pattern in the fabric is produced by shifting the wing cam of thedial in and out radially so that rib and tuck stitches will be producedin the courses in alternation, but the time of shifting the wing cam inrelation to the revolution of the machine is such that for a certainnumber of courses the changing of the wing cam will lag in respect tothe revolutions of the machine so that in these courses the changes willoccur on say succeeding wales and consequently spiral stripes will beproduced running around the fabric in one direction and after theprescribed numberof courses have been knit the timing of the changes inthe wing cams position will occur so as to advance from wale to waleinstead of lagging from wale to wale and consequently there will beproduced a continuation of the stripes first mentioned but runningaround the fabric in a spiral direction opposite to the direction of thespiral portions first mentioned. Therefore, stripes of substantially zigzag form will be produced of alternating tuck. and plain rib stitch.

ln the drawing a represents plain rib and tuck or cardigan. The cardiganhas a por tion a running at an inclination or spirally in one directionin respect to the length of the fabric indicated by the linee-fc andalso a portion aif4 joining the ortion a. but runnin l epirally or at anine in'aten in the' irectiea and the plein rib han the same form so thatin the particular structure illustrated there is a zig zag stripe oftuck or cardigan iliade up of the part a', a2 and intermediate zig Zagstripes of plain rib. Tf red and blue yarns are knitted in, the blue atthe special feed and red at the ordinary feed, there will appear a zigzag stripe with blue predominating in the tuck and a stripe of plain ribwith alternate course of red and blue will appear.

It will be observed that the tuck portion a is spirally in line withother tuck portions a, a", whilethe tuck portion a2 is spirally n u n o1n line with the tuck portions a, a4, the

spiral line a', a, a", being interrupted byapart than in the courses inwhich the' stripes run in the opposite direction. This is representedconventionally in Fig. 2. The diagonals or substantially rhomboid forms1 will merge in more or less degree with the oppositely inclinedrhomboids 2, but a portion of one will extend beyond the portion of theother as at 3 and at some points a break may occur as at 4. Therefore anirregular zig zag formation will be produced leaving portions of theforms projectingr and these irregularities will be accentuated becauseof the distortion of the fabric due to the fact that it is made up ofalternating portions of plain rib and tuck stitches and the generaleffect will be substantially like Fig. l.

It will be understood of course that theA fabric is preferably made ofdifferent colored yarn. At any rate it is produced with two yarns and Ihave markedone portion white yarn and the other portion red lao changesbeing broken by intermediate plain ril; portions ot the l'aln'ir.sulfsialnhall'v u` described.

3. t'aluii: iliade up oll a plurality ol1 yarns with alternating'portioml olr turr and plain ril) in a Series olt aueressive roursot'ormintr diagonal portions runningr one \\':.1

and other f'liagonal portions running' in the 2O opposite direetions.said portions inatrhing eaeh other irregularly, substantially asdescribed.

In testinion)v whereof l liix my signature.

HERBEIV T. BALLARD.v

